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Official data from INPI

DISPOSITIVO CENTRALIZADOR DE OBTURADORES

Prazo de SigiloInvention Patent

Application data

Number

PI8901637

Type

Invention Patent

Filing

04/07/1989

Publication

10/30/1990

Progress at the INPI

  1. Filing04/07/89
  2. Publication10/30/90
  3. Examination04/09/91
  4. Allowance05/24/94
  5. Grant03/01/95
  6. Expired12/15/09

The letters patent expired on 12/15/2009: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

Talk to a specialist

Latest action published by the INPI: 05/23/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Petróleo Brasileiro S/A - Petrobrás

RJ, BR

See this company's full portfolio

Inventors

E. P. (pessoa física)

BR

Technical data

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de patente depositado

#2.1

05/23/1989

RPI 970

Carta-patente expirada

#21.1

Patente extinta em 07/04/2004

12/15/2009

RPI 2032

Concessão da patente

#16.1

03/01/1995

RPI 1265

Notificação para pagamento de retribuição

#13.1

09/27/1994

RPI 1243

Deferimento

#9.1

05/24/1994

RPI 1225

Solicitação de exame técnico

#4.1

04/09/1991

RPI 1062

Publicação do pedido de patente

#3.1

10/30/1990

RPI 1039

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